\begin{tabular}{l*{3}{c}} \hline \hline \noalign{\smallskip} 
		\shortstack{$\frac{\log(\text{earnings change at migration})}{\log(\text{GDP p.w. difference})}$\\ \ } & \shortstack{All\\migrants} & \shortstack{Migrants into \\U.S. from\\poor countries} & \shortstack{Migrants into \\U.S. from\\India} \\
\hline \noalign{\smallskip}
Mean& 0.518& 0.577& 0.604\\
Median& 0.488& 0.599& 0.621\\
\hline \noalign{\smallskip} 
Total migrants& 12,210& 3,158& 2,749\\
 \hline \hline \noalign{\smallskip}
\end{tabular}